Machine for stripping metal



(No Model.)

H. S. BACON.

MACHINE FOR'STRIPPING METAL.

No. 319,772. T Patent June 9,1885.

WITNESSES v INV-IE-NT-EYJIR MM Ww UNITED STATES PATENT OFFICE.

HENRY S. BACON, OF MILFORD, ASSIGNOB TO THE AMERICAN METALLIC FASTENING ASSOCIATION, OF BOSTON, MASSACHUSETTS.

SPECIFICATION forming part of Letters Patent No. 319,772, dated June 9, 1885.

Application filed February 24, 1885. (No model.) Patented in England August 14, 1883, No. 3,944; in Canada October 16, 1883, g

No. 17,848, and in France November 24, 1883, No. 157,056.

To all whom it may concern..-

Be it known that I, HENRY S. BACON, of Milford, county of Worcester, State of Massachusetts, have invented certain new and useful Improvements in Machinery for Stripping Metal, of which the following, taken in connection with the drawingsaccompanying and forming a part hereof, is a specification.

The object of my invention is the construction of a simple and efiective machine for dividing a ribbon of metal into narrow strips; and the chief feature thereof is the construction and arrangement of the cuttingdisks, as also the guides and fingers which serve, re-

1 spectively, to direct the uncut ribbon to the cutters, and to return the cut strips, immediately after passing the cutters, to the same plane, as will be hereinafter more fully described, in order that they may pass evenly to the receiving-spool, on which they are wound.

In the drawings, Figure 1 is a plan view of the machine. Fig. 2 is a section on line as :r, Fig. 1. Fig. 3 is a rear view with part of the secondary shaft, as also the receiving-spool,

broken away.

Similar letters of reference indicate like parts.

A represents a stand or table, on which, by 0 means of convenient frame-work, the various parts of the machine are supported. A drivingshaft, B, mounted in suitable bearings, (see Fig. 1,) is provided with a driving-pulley, C. On the shaft B is set a pinion, D, which may be made fast with the driving-pulley when the operator desires to start the machine, which is done by means of the shipper-lever E and clutch mechanism of well known construction. (Shown in Figs. 1 and 3.) The pin- 0 ion D meshes with gear F, fast on the secondary shaft G, which is mounted in bearings on the arms H H. On this shaft is also mounted the receiving-spool I, which is held in position by a nut on the shaft, (see Fig. 1,) so that it may be easily removed when full. Directly in line with this spool and the rotary cutters J is a spool or pin, K, supported on suitable projecting arms, L, which holds the coil of metal which is to form, when out, a series of narrow coils. Between the supply and the receiving spools is set, in bearings in the uprights M M, a short shaft, N, which is placed directly above the shaft B. This shaft B is also supported in the uprights M M, and is connected with the short shaft N by the gears 5 5 O O, by means of which the movement of the shafts and their cutting-disks is kept uniform.

On the shaft B, between the uprights M M, is secured a series of collars, 1', which are separated by collars t, of less diameter, placed between them on the shaft. (See Figs. 1 and 3.) These collars 7 form a series of cuttingdisks, and the collars t hold the cutters apart a distance corresponding to the width of the strip which it is desired to out. A similarly- 6 5 prepared series of cutting-disks and collars is set on the short shaft N, and the shafts are so arranged relatively to each other as that the disks of each shall project slightly into and shall fit the spaces of the other. 7c The edges of these disks, which are of hardened steel ground to the exact size required, are sharp, and,when the shafts N and B are revolved, act as cutters. They are rotary shears,

and will readily divide the broad strip of sheet 7 5 metal into a series of strips equal in width to the width of the cutting-disks and corresponding spaces. The broad strip P, Fig. 1, in passing from the coil, is guided over a table, a, Fig.

2, between the guide-pieces b b, and is thereby presented evenly to the cutters. Theguide b is set fast on one side of the table a and slightly outside 'of the line of the cutters,.so that the rough edge of the strip P will be trimmed off, thus forming a smooth outside 8 edge to the narrow strip cut from that side of the ribbon P. .The guide b is set on apivotat 12*, the other end being attached to the spiral spring 3, which acts to draw the end of the guide to which it is attached awayfrom the go ribbon of metal 1?, thus forcing the end of the guide, which projects close into the cutters, against the ribbon, and holding the ribbon pressed tightly against the other guide, I). This arrangement of guideb allows the guide 5 to accommodate itself to the inequalities of the edge of the ribbon of metal which is being out. After passing the cutting-point, the narrow strips which are formed pass under and over the respective disks by which they are cut, Ico

tween the uprights M M,(see Fig. 3,) a series of fingers, d, of theshape shown, Fig. 2, so arranged that each space between the cuttingdisks will be occupied by a finger, the point of which will bear upon the strip immediately after it has passed the cutting-disk and press or guide it back into the plane of cut. The fingers which lie in the spaces between the upper cutters, Fig. 3, lie above the metal, and press the strips, which are in the operation of cutting forced up by the lower cutters, downward again onto the plane of out, while the lower fingers, which act in the spaces between the lower cutters, act reversely. to press upward the strips which have been cut and carried down by the upper cutters. The shaft N, which carries the upper cutters, is mounted in common sliding bearings,which are adj ustcd by set-screws from above in the wcll-known-manner, and which permit of the necessary adjustment of the cutters. The, shafts which carry the cutting-disks are geared together at O O, in order that they may act uniformly, and also that it may be easier to get the ribbon P into the machine when it is started. In getting the end of the ribbon I? through between the cutters, before starting a: crank is applied at A, ,,Fig. l. The shafts bearing the cutters have no power applied toi them, the operation of cutting being accom-; plished by drawing the ribbon ot'metal through between the cutters, which is done by spool I.;

This spool, having the cut strips secured to it,

is keyed fast toits shaft G, and the revolution of the shaft draws the metal strip between the cutters.

It will be obvious that my invention may be employed for stripping other materials than metal, and is particularly efiicient where 1 the material is hard to cut or must .be cut evenly.

What I claim is 1. The combination, with means, substantially as shown and described, for supplying a single strip of metal to be cut and for receiving it after it has been cut, of the rotary compound cutters, each consisting of a series of spaces alternating with cutting-disks having flat peripheries, the cutting-disks in one cutter being arranged to project into the corresponding spaces in the other cutter, for the purpose and substantially as set forth.

2. The combination, with the rotary cutters, of the table aand guide b, arranged to guide the uncut strip and deliver it evenly to the cutters, substantially asshown and described.

3. The combination,with the rotary cutters, of the fingers a, pivoted behind the cutters and arranged to project into the spaces between the same, substantially as shown and described.

receiving spools, of the table a, and the guide,

the rotary cutters J J, and fingers d d, pivoted as shown, all substantially as described.

, HENRY S. BACON.

Witnesses:

' WM. A. MAOLEOD, ROBERT WALLAoE. 

